sunspots
n.
太阳黑子( sunspot的名词复数 );
雀斑;
例句:
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Sunspots Sunspots can be as big as the Earth.
来自BBC
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In summary there are the following possibilities for the observation of sunspots.
总而言之,对太阳黑子的观测存在着下列可能性.
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Approximately every 11 years the number of visible sunspots reaches a maximum.
大约每11年,可看到的太阳黑子数目达到一个峰值.
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To follow these movements of sunspots is worthwhile for every solar observer.
任何一个太阳观测者值得花时间和精力去跟踪观测太阳黑子的这种移动.
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What was not understood until recently was the role of sunspots.
来自SA
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Therefore, the overall irradiance increases in correspondence with higher numbers of sunspots.
来自SA